11925649 has 4 divisors (see below), whose sum is σ = 12041536. Its totient is φ = 11809764.

The previous prime is 11925647. The next prime is 11925677. The reversal of 11925649 is 94652911.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94652911 = 263 ⋅359897.

It is a cyclic number.

It is not a de Polignac number, because 11925649 - 2¹ = 11925647 is a prime.

It is a super-2 number, since 2×11925649² = 284442208142402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11925647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57789 + ... + 57994.

It is an arithmetic number, because the mean of its divisors is an integer number (3010384).

Almost surely, 2^11925649 is an apocalyptic number.

It is an amenable number.

11925649 is a deficient number, since it is larger than the sum of its proper divisors (115887).

11925649 is a wasteful number, since it uses less digits than its factorization.

11925649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115886.

The product of its digits is 19440, while the sum is 37.

The square root of 11925649 is about 3453.3532978831. The cubic root of 11925649 is about 228.4690316456.

The spelling of 11925649 in words is "eleven million, nine hundred twenty-five thousand, six hundred forty-nine".